Celeris-1 vs K2 Horizon 36B-A4B
Wins 0 of 5 areas
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Wins 5 of 5 areas
Coding · Agents · Reasoning · Facts · Long documents
K2 Horizon 36B-A4B is the stronger all-rounder.
Scores updated · 13 tests both models report · How we compare
Where each one wins
Tests won in each of the five areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- ReasoningHard problems that need careful thinking03K2 Horizon 36B-A4B3 of 3 tests
- AgentsCarrying out multi-step tasks on its own02K2 Horizon 36B-A4B2 of 3 tests · 1 tie
- CodingWriting and fixing software02K2 Horizon 36B-A4B2 of 2 tests
- FactsGetting facts right instead of making them up02K2 Horizon 36B-A4B2 of 2 tests
- Long documentsFinding answers in very long texts01K2 Horizon 36B-A4B1 of 1 test
Long documents rests on a single test.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where K2 Horizon 36B-A4B pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+62.3points ahead
- Command-line tasks in a real terminalTerminal-Bench 2.1+45.4points ahead
- Reasons across sets of long documentsAA-LCR+33.7points ahead
Where Celeris-1 pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 13 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingK2 Horizon 36B-A4B
- Terminal-Bench 2.1K2 Horizon 36B-A4B by 45.411.256.6+45.4
- SciCodeK2 Horizon 36B-A4B by 18.421.640+18.4
AgentsK2 Horizon 36B-A4B
- GDPValK2 Horizon 36B-A4B by 34.7034.7+34.7
- τ-Bench V3 · BankingK2 Horizon 36B-A4B by 28.13.932+28.1
- Terminal-Bench 4.0tie00tie
ReasoningK2 Horizon 36B-A4B
- GPQA DiamondK2 Horizon 36B-A4B by 19.163.182.2+19.1
- Humanity's Last ExamK2 Horizon 36B-A4B by 16.66.823.4+16.6
- CritPtK2 Horizon 36B-A4B by 2.302.3+2.3
FactsK2 Horizon 36B-A4B
- AA-Omniscience · Non-hallucinationK2 Horizon 36B-A4B by 62.37.269.5+62.3
- AA-Omniscience · AccuracyK2 Horizon 36B-A4B by 41115+4
Long documentsK2 Horizon 36B-A4B
- AA-LCRK2 Horizon 36B-A4B by 33.73871.7+33.7
Other results2 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- AA-OmniscienceK2 Horizon 36B-A4B by 60.7-71.6-10.9+60.7
- AA IntelligenceK2 Horizon 36B-A4B by 196.325.3+19
Questions people ask
Which is better, Celeris-1 or K2 Horizon 36B-A4B?
K2 Horizon 36B-A4B wins all five areas where both have results: coding, agents, reasoning, facts and long documents. Celeris-1 wins none.
Which is better for coding?
K2 Horizon 36B-A4B. It wins 2 of the 2 coding tests both models report; Celeris-1 wins none.
How do you compare the two?
We use the 13 benchmark tests both models have published scores on. The verdict counts the 11 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 2 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.